The purpose of this study is to investigate the effect of security service offered by police patrol units on citizens’ safety satisfaction in Korea. In line with this perspective, this study utilizes Parasuraman et al. (1988)’s SERVQUAL model to measure the qualities of security service such as empathy, tangible, responsiveness, assurance, and reliability. A 19-item survey questionnaire was administered to 249 citizens who have experiences in visiting police patrol units in the Daegu Metropolitan City and the Gyeongbuk Province. The data were analyzed by factor, reliability, correlation, and multiple regression analysis. According to the data analysis results, empathy, tangible, assurance and reliability have statistically significant effects on citizens’safety satisfaction (p<.01).